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Overlay Anti Corrosion Shield Boiler Economizer With ASME Stamp

Overlay Anti Corrosion Shield Boiler Economizer With ASME Stamp

Overlay Anti Corrosion Shield Boiler Economizer With ASME Stamp
Overlay Anti Corrosion Shield Boiler Economizer With ASME Stamp
Overlay Anti Corrosion Shield Boiler Economizer With ASME Stamp
Product Details:
Place of Origin: China
Brand Name: HD BOILER
Certification: ISO9001 , SGS , TUV , ASME
Model Number: Boiler Economizer
Payment & Shipping Terms:
Minimum Order Quantity: 1 Set / Sets 10tons
Price: Negotiable
Packaging Details: Seaworthy Packing
Delivery Time: 30 days
Payment Terms: Western Union, L/C, T/T
Supply Ability: 500 Tons per month
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Detailed Product Description
Material: Carbon Steel Usage: Heat Exchanger
Type: Energy Saving Structure: Fire/Water Tube
Output: Hot Water/Steam Fuel: Coal/Gas/Oil-fired, Water Heat
Condition: New Dimension(L*W*H): Customization
High Light:

Overlay Boiler Economizer


Anti Corrosion Shield Boiler Economizer


Boiler Economizer With ASME Stamp


Boiler Spare Parts Economizer Module With Overlay Anti Corrosion Shield With ASME Stamp


The boiler economizer is an indispensable mechanical device for coal fired boilers, and is located at the boiler flue, where heat is captured from the flue gas in order to pre-heat cold water inlet or heat the boiler feed water. Our economizers are generally made of 20 low and medium pressure boiler pipes, 20G seamless steel tubes or ASME grade steel tubes. It reduces the flue gas temperature and maximizes the heat recovery to help customers reduce fuel costs. When entering the steam drum, the temperature of the feed water is increased after it has been heated using the economizer. The thermal stress caused by the temperature difference between the steam drum wall and the feed water is reduced, which reduces the shrink and swell in the steam drum. Our economizer is an excellent, less expensive replacement for high temperature boiler water wall tubing, thus reducing manufacturing costs for coal fired boilers.


Feature of H-Type Fin Tube Waste Heat Boiler/Heat Recovery Boiler :
1. Adopting H-type fin tube as the heat exchange components ,high heat transfer efficient,compact structure ,less accumulated ash,stand for rear and tear.
2. The material of the low temperature section is special steel.
3. Modular structure design,convenient installing,easy operating,high heat transfer efficient



Description Boiler economizer
Material Alloy steel, Carbon steel, SA210C ,SA213T22, etc.
Material standard ASTM, EN or ISO etc.
Dimension Customization

Min: 10 ton

Max.:1000 ton

Smelting Process: EF+LF + VD
Process Material→Ingot → Hot/Cold-Rolling→ Heat treatment (Normalizing+ tempering) → Inspection →rough machining→UT →2nd Heat treatment →finishing machining →Inspection
UT standard ASTM A388 or EN10228, etc

Technical specifications

Material Structure
Consists of a serious of spiral fin tubes, the headers of inlet and outlet, bend, frame and other auxiliaries.

Structure Arrangement
In line / staggered arrangement.




(1) The economizer is a steam generation system as like a boiler. when the exhaust gas discharge from the engine cylinder through the exhaust valve it goes to the boiler for generate steam by heating of water.


(2) After those gas it goes through the economizer the remaining exhaust gas temperature is heated the water in economiser. it help to generate steam, and it is improving the efficiency and save the fuel consumption


(3) An economizer uses the waste heat from the boiler exhaust, that would otherwise be lost to atmosphere to (in most cases) preheat the feed water into the boiler.This improves the boiler efficiency and reduces fuel costs.




Utility Boiler Economizer

1 HDB produces economizers for utility boilers, which includes boilers fueled by coal, wood, oil, or other solid fuels to produce electricty from the boiler's high pressure steam.
2 These economizers are usually located in the back pass of the boiler and oriented with the tubes running horizontally.The boiler feedwater runs through the economizer circuits in the opposite direction of the gas flow (called counterflow).
3 Bare tubes are typically utilized in order to minimize ash fouling, but some boiler OEM's design their economizers with finned tubes, either spiral or long finned.
4 HDB can produce economizer elements with either bare, spiral finned, or long finned tubes, and if you prefer, re-design your unit to one of the other tube-types. HDB can also fabricate replacement headers for all utility boiler economizers.


Package Boiler Economizer

1 HDB has unique manufacturing capabilities that the Optimus engineers take full advantage of when designing sulfuric acid plant economizers and superheaters.
2 Often this allows the Optimus units to be configured for higher heat transfer efficiencies which results in a reduced surface area requirement and, consequently, a lower-priced product.
3 HDB utilizes its on-site capabilities to fin and bend the tubes, machine and fabricate the headers, drill the tubesheets, cut and prep all casing materials, and perform all of the pressure part and casing welds.
4 This gives HDB more control of the manufacturing sequence and schedule which has helped us achieve a remarkable record of on-time delivery performance.


HRSG Economizer

1 Economizers for today's HRSG modules are configured with fintubes that hang vertically. HDB has fabricated economizer coils for virtually all of the HRSG OEM companies and understands the unique features of each.
2 In many cases, utilities desire to upgrade their economizers from plain carbon steel to an alloy material to help resist flow accelerated corrosion (FAC) inside the headers and tube bends.
3 HDB is a one-stop shop for economizer fabrication because we prep all the materials and perform all of the pressure part and attachment welding, from finning the fintubes, fabricating the headers, and assembling the coil bundle.


Various boiler economizers can be fabricated

  • Steel Boiler Economizer (SA210A1, SA210C, SA213T22)
  • Carbon Steel H-Shaped Steam Boiler Economizer
  • Alloy Steel Boiler Economizer
  • Spiral Welded Economizer
  • CFB Boiler Economizer
  • Power Station Boiler Economizer
  • Steaming Economizer
  • Non-Steaming Economizer
  • Plain Tube Economizer
  • Finned Tube Economizer
  • Spiral Finned Tube Economizer
  • Serpentine Tube Economizer
  • ASME Standard Boiler Economizer
  • EN Standard Boiler Economizer
  • ISO Boiler Economizer

*Note:HD BOILER can bespoke special type of economizer according to customer's requirement.




1 Latest type of 'U' bending machine is used for precision cold bending of tubes.
2 Bending is done for all kind of heat exchanger, condenser, economizer, boiler tubes in Stainless Steel Seamless as well as welded.
3 Subsequent to 'U' bending tubes are hydro tested & stress relieved if asked for.
4 Also mock-up pieces are prepared for determining thickness reduction on the bend portion.
5 Dye penetrant testing on the bend portion is done ro detect cracks, flaws or any type of defect.
6 Special packing is provided to prevent any damages during transit.


Overlay Anti Corrosion Shield Boiler Economizer With ASME Stamp 0


Huadong Boiler is equipped with an on-site fabrication shop and 700 qualified professionals with collective over 30 years of experience. We are able to carry out heavy boiler component fabrication like finned tubing system, boiler pressure vessels and economizers. We are equipped with metal sheet punching machines, CNC plasma cutting machines, arc welding machines and many large capacity of lathes. Due to the strong manufacturing capabilities, we can provide custom services for a variety of industrial needs

Contact Details
Zhangjiagang HuaDong Boiler Co., Ltd.

Contact Person: Miss. Sandy Chen

Fax: 86- 512-58774453

Send your inquiry directly to us (0 / 3000)


Address: Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China

Factory Address:Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China